To get an index of gentrification we need to combine variables that are correlate with gentrification in order to get a combined index score. In this case, the variables that are correlated with gentrification are Percent of White Population, Percent of Population who are 25 years and older who have a Bachelor’s Degree, Percent of Population who are above the Poverty Income Level, and Percent of Population of Renters. Then we have to standardize the population by getting the z scores for each variable to make the comparable to each other. Then we can add up the z scores for each variable and divide by 4 to get the average z score. This average z score can be used as an Index to measure Gentrification in the King County Tract.